<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    #tab {
        margin: 10px auto;
        width: 500px;
        height: 500px;

    }

    td {
        border: solid 2px red;
        width: 100px;
        height: 80px;
        text-align: center;
        font-weight: bold;
    }
</style>
<script>
 var times = 0;
        var st;
        function fn() {
            times++;
            console.log(times);
            for (let i = 1; i <= 42; i++) {
                var tdObj = document.getElementById('td' + i);
                tdObj.style.backgroundColor = 'white';
            }
            //获取1-9随机数
            var num = parseInt(Math.random() * 41+1);
            //获取对应的td对象
            var tdObj = document.getElementById('td' + num);
            //设置背景颜色
            tdObj.style.backgroundColor = 'red';
            if (times >= 30) {
                //将结果显示到span中
                document.getElementById('sp').innerText = '恭喜:'+tdObj.innerText +' 奖励一份套餐';
                // if (document.getElementById('陈鹏').innerText) {
                //     document.getElementById('sp').innerText = '恭喜:'+tdObj.innerText +' 兰博基尼一辆';
                // }else{

                // }
                clearInterval(st);
            }
        }
        function start() {
            //清空:初始化白色背景
            times = 0;
            for (let i = 1; i <= 9; i++) {
                var tdObj = document.getElementById('td' + i);
                tdObj.style.backgroundColor = 'white';
            }
            //抽奖开始，将span中的文本设置成：正在抽奖中...
            document.getElementById('sp').innerText = '正在抽奖中...'
            //设定定时器,3秒后出结果
            st = setInterval(fn, 100);
        }

</script>

<body>
    <div id="btn" style="text-align: center; margin:50px">
        <button  onclick="start()">开始抽奖</button>
        <span id="sp"></span>
        <table id="tab">
            <tr>
                <td id="td1">郑玮喆</td>
                <td id="td2">庄云</td>
                <td id="td3">廖治先</td>
                <td id="td4">郑文源</td>
                <td id="td5">戴俊锋</td>
                <td id="td6">陈昊童</td>
            </tr>

            <tr>
                <td id="td7">谢金金</td>
                <td id="td8">占志新</td>
                <td id="td9"> 张淑芳</td>
                <td id="td10"> 刘永潘</td>
                <td id="td11">廖柏成</td>
                <td id="td12">郑宗帅</td>
            </tr>

            <tr>
                <td id="td13">李韦峰</td>
                <td id="td14">吴欣燕</td>
                <td id="td15">陈梅香</td>
                <td id="td16">陈立智</td>
                <td id="td17"> 袁贵森</td>
                <td id="td18">赵浩敏</td>
            </tr>

            <tr>
                <td id="td19"> 林世涛</td>
                <td id="td20">罗启恒</td>
                <td id="td21">卢国建</td>
                <td id="td22">黄柱菘</td>
                <td id="td23">陈鹏</td>
                <td id="td24">张耀仁</td>
            </tr>

            <tr>
                <td id="td25">张正豪</td>
                <td id="td26">韦仲晓</td>
                <td id="td27">黄富贵</td>
                <td id="td28">陆建锋</td>
                <td id="td29">曾德森</td>
                <td id="td30">吴文龙</td>
            </tr>

            <tr>
                <td id="td31"> 陆利群</td>
                <td id="td32"> 黄雄</td>
                <td id="td33">王世财</td>
                <td id="td34">张先杰</td>
                <td id="td35">胡基耀</td>
                <td id="td36">马鑫涛</td>
            </tr>

            <tr>
                <td id="td37"> 李涛</td>
                <td id="td38">杨凌翔</td>
                <td id="td39">罗此东</td>
                <td id="td40">唐皓颖</td>
                <td id="td41">白婉婷</td>
                <td id="td42">陈华伟</td>

            </tr>









        </table>
    </div>
</body>

</html>